<template>
  <div>
    <button @click="isShow=!isShow">显示/隐藏</button>
    <transition name="hello" appear>
       <h1 v-show="isShow">你好啊！</h1> 
    </transition>
  </div>
</template>

<script>
export default {
    name:'Test',
    data(){
        return{
            isShow:true
        }
    }
}
</script>

<style scoped>
h1{
    background-color: orange;
}
.hello-enter-active{
    animation: ceshi 1s;
}
.hello-leave-active{
    animation: ceshi 1s reverse;
}
@keyframes ceshi {
    from{
        transform: translateX(-100%);
    }
    to{
        transform: translateX(0px);
    }
}
</style>